Brake-shoe.



G. D. YOUNG.

BRAKE SHOE. APPLIOATION mum APR. 11. 1913. 1,1 19,383. Patented Dec. 1,1914

2 SHEETS-SHEET 1.

Mmzssss mvsm-on 0-. 1). YOUNGQ .BBAKB SHOE.

AIPLIOATION FILED APR. 11. 1913.

7 1,1 19,383. I Patented Dec.1,1914.

2 SHEETS-SHEET 2.

YIIIIIIIA WITNESSES INVENTOR UNITED STATES PATENT OFFICE.

CHARLES D. YOUNG, F ALTOONA, PENNSYLVANIA.

BRAKE-SHOE.

Application filed April 11.

To all whom it may concern Be it known that I, Cuannns D. YOUNG,

a citizen of the United States. residing at Altoona, in the county of Blair and State of Pennsylvanim have invented certain new and useful Improvements in Brake-Shoes,

' of which the following is a Specification.

'llhein'vefitiorrrela'tes to brake shoes, and

particularly to the proyision of a brake shoe having an increased coefficient of friction and betterwearing qualities; and the provision of ai cast metal shoehaving more or less flexibility.

I Certain embodiments of the invention are illustrated in the accompanying drawings, wherein Figures Land '2 are plan and ,side elevation views respectively of one form of brake shoe, Figs. 3 and 4 are plan and side elevations respectively of a modified type of shoe. Figs. 5 and 6 are plan and partial side elew'ations of still another modified type of shoe, and Fig. 7 is a section on the line VII-VII of Fig. 6.

- Referring to Figs. 1 and 2, the body portion 1 of the shoe is of cast metal, and is provided with the slots 2 and 3 extending inward from the face of the shoe to a point adjar/ant its back. The back of the shoe is of "plication. In so far as the present invention is concerned, the type ofback is immaterial. The slots 2 and 3 are made sufliciently deep so that the end portions of the cast body 1 are flexible with respect to the central portion, and can be sprung slightly with respect thereto. The depth to which these slots extend will vary, depending upon conditions. but are sufficient in all cases to give the shoe the desired amount of flexibility. This feature of flexibility permits the shoe to conform itself more perfectly to the contour of the wheel, thus increasing the Patented Dec. 1,191.4.

1913. Serial No. 760,475.

wearing qualities of the shoe. It has also been found that the coefficient of friction between the wheel and a flexible shoe of this character is greater than that in which a non-flexible shoe is used, of the same general construction. The lugs of metal 6 are pro vided upon the back of the body portion opposite the ends of the slots 2 and 3. These reinforcing lugs 6 serve to strengthen the body portion opposite the slots and prevent the accidental breakage of the shoe before it is applied to the wheel.

The structure of Figs. 3 and 4 corresponds to that of Figs. 1 and 2, in so far as the body portion 1, the slots 2 and 3, and the back. are concerned, but in place of the pairs of reinforcing lugs 6, 6, of Figs. 1 and 2, the single reinforcing lugs 8 are employed, such lugs being located at the center line of the shoe as indicated in Fig. 3.

Figs. 5, 6, and 7 illustrate still another modification, the slots 2 and 3 in the bottom portion 1 being in this case provided not only with the reinforcinglugs on the back of the shoe, but also with the bridging portions 10, 10, so that the shoe is doubly guarded against breakage before its application to the wheel. The reinforcing lugs in this case are in the form of the ridges 9, 9, integral with the body portion and lying opposite the ends of the slots. i

What I claim is: I

1. In a brake shoe a cast metal body portion having a slot extending inwardly from the face of the body portion to give the body portion flexibility, the said slot terminating short of the back of the body portion. and a reinforcing lug at the back of the body portion opposite the slot and integral with the body portion.

2. In a brake shoe, a cast metal body portion havinglugs projecting from its back on either side of the transverse center of the shoe, a reinforcement embedded in the shoe adjacent the back thereof, and means for securing the brake shoe to a brake head. said body portion being provided with a plurality of grooves extending inward from the wearing face substantially to the reinforcement. and disposed opposite the said lugs.

3. In a brake shoe, a cast metal body poru I I I I tion harlng a slot extending inwardly from signed my name in the presence of the two the face of the body portion and disposed subscribed witnesses. on one side of the transverse center of the shoe, and a reinforcing lug at the backof v G LES U 5 the body portion opposite the slot and inte- Witnesses: gral with the body portion. I C. C. ROTHRQCK,

} In testimony whereof I have hereunto @TTO B. Ft] 

